| /* |
| * |
| * Copyright 2015, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #include <grpc/grpc.h> |
| |
| #include <string.h> |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/string_util.h> |
| |
| #include "src/core/ext/client_channel/client_channel.h" |
| #include "src/core/ext/client_channel/resolver_registry.h" |
| #include "src/core/ext/transport/chttp2/client/chttp2_connector.h" |
| #include "src/core/lib/channel/channel_args.h" |
| #include "src/core/lib/surface/api_trace.h" |
| #include "src/core/lib/surface/channel.h" |
| |
| static void client_channel_factory_ref( |
| grpc_client_channel_factory *cc_factory) {} |
| |
| static void client_channel_factory_unref( |
| grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory) {} |
| |
| static grpc_subchannel *client_channel_factory_create_subchannel( |
| grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory, |
| const grpc_subchannel_args *args) { |
| grpc_connector *connector = grpc_chttp2_connector_create(); |
| grpc_subchannel *s = grpc_subchannel_create(exec_ctx, connector, args); |
| grpc_connector_unref(exec_ctx, connector); |
| return s; |
| } |
| |
| static grpc_channel *client_channel_factory_create_channel( |
| grpc_exec_ctx *exec_ctx, grpc_client_channel_factory *cc_factory, |
| const char *target, grpc_client_channel_type type, |
| const grpc_channel_args *args) { |
| if (target == NULL) { |
| gpr_log(GPR_ERROR, "cannot create channel with NULL target name"); |
| return NULL; |
| } |
| // Add channel arg containing the server URI. |
| grpc_arg arg; |
| arg.type = GRPC_ARG_STRING; |
| arg.key = GRPC_ARG_SERVER_URI; |
| arg.value.string = grpc_resolver_factory_add_default_prefix_if_needed(target); |
| const char *to_remove[] = {GRPC_ARG_SERVER_URI}; |
| grpc_channel_args *new_args = |
| grpc_channel_args_copy_and_add_and_remove(args, to_remove, 1, &arg, 1); |
| gpr_free(arg.value.string); |
| grpc_channel *channel = grpc_channel_create(exec_ctx, target, new_args, |
| GRPC_CLIENT_CHANNEL, NULL); |
| grpc_channel_args_destroy(exec_ctx, new_args); |
| return channel; |
| } |
| |
| static const grpc_client_channel_factory_vtable client_channel_factory_vtable = |
| {client_channel_factory_ref, client_channel_factory_unref, |
| client_channel_factory_create_subchannel, |
| client_channel_factory_create_channel}; |
| |
| static grpc_client_channel_factory client_channel_factory = { |
| &client_channel_factory_vtable}; |
| |
| /* Create a client channel: |
| Asynchronously: - resolve target |
| - connect to it (trying alternatives as presented) |
| - perform handshakes */ |
| grpc_channel *grpc_insecure_channel_create(const char *target, |
| const grpc_channel_args *args, |
| void *reserved) { |
| grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| GRPC_API_TRACE( |
| "grpc_insecure_channel_create(target=%p, args=%p, reserved=%p)", 3, |
| (target, args, reserved)); |
| GPR_ASSERT(reserved == NULL); |
| // Add channel arg containing the client channel factory. |
| grpc_arg arg = |
| grpc_client_channel_factory_create_channel_arg(&client_channel_factory); |
| grpc_channel_args *new_args = grpc_channel_args_copy_and_add(args, &arg, 1); |
| // Create channel. |
| grpc_channel *channel = client_channel_factory_create_channel( |
| &exec_ctx, &client_channel_factory, target, |
| GRPC_CLIENT_CHANNEL_TYPE_REGULAR, new_args); |
| // Clean up. |
| grpc_channel_args_destroy(&exec_ctx, new_args); |
| grpc_exec_ctx_finish(&exec_ctx); |
| return channel != NULL ? channel : grpc_lame_client_channel_create( |
| target, GRPC_STATUS_INTERNAL, |
| "Failed to create client channel"); |
| } |